Numbers whose base-4 and base-9 expansions have the same digit sum.

Terms

a(0) =1a(1) =2a(2) =3a(3) =28a(4) =29a(5) =30a(6) =31a(7) =54a(8) =55a(9) =100a(10) =101a(11) =102a(12) =103a(13) =198a(14) =199a(15) =248a(16) =249a(17) =250a(18) =251a(19) =270a(20) =271a(21) =342a(22) =343a(23) =441a(24) =442a(25) =443a(26) =488a(27) =489a(28) =490a(29) =491